CN213889168U - Fixing device for numerical control milling machine - Google Patents

Abstract

The utility model relates to a fixing device for numerically controlled fraise machine is applied to numerically controlled fraise machine's field, and it includes the sucking disc body, is provided with the stationary plane that is used for fixed work piece on the sucking disc body, has seted up the air vent on the stationary plane, and the intercommunication has the exhaust tube that is used for linking to each other with the air extractor on the sucking disc body, is provided with the switch unit between exhaust tube and the sucking disc body, and the switch unit is used for controlling this internal atmospheric pressure of sucking disc. Through the setting of sucking disc in this application, when processing thinner work piece, can fix the work piece on the sucking disc, reduced the possibility that the work piece produced the deformation.

Description

Fixing device for numerical control milling machine

Technical Field

The application relates to the field of numerical control milling machines, in particular to a fixing device for a numerical control milling machine.

Background

At present, the Numerical control milling machine is also called cnc (computer Numerical control) milling machine. English means milling machine controlled by digital signal. The numerical control milling machine is an automatic processing device developed on the basis of a common milling machine, the processing technologies of the two are basically the same, and the structures are somewhat similar. The numerical control milling machine is divided into two categories, namely a tool magazine without tool magazine and a tool magazine with tool magazine. Wherein the numerical control milling machine with the tool magazine is also called as a machining center.

Chinese patent with publication number CN208696841U discloses a workpiece clamping device for a numerically controlled milling machine, which comprises a numerically controlled milling machine body, wherein a fixed block is fixedly connected to the numerically controlled milling machine body, a telescopic rod is fixedly connected to the fixed block, and a first clamping block is fixedly connected to one end of the telescopic rod, which is far away from the fixed block. Fixedly connected with second grip block on the numerically controlled fraise machine body, sliding connection has the slider in the second grip block, slider one end fixedly connected with limiting plate, and the other end rotates and is connected with the threaded rod, threaded connection of threaded rod and second grip block. When the workpiece is clamped, the telescopic rod is adjusted to be proper in length, the workpiece is placed between the first clamping block and the limiting plate, then the threaded rod is rotated, and the threaded rod drives the sliding block and the limiting plate to move towards the first clamping block until the first clamping block and the limiting plate clamp the workpiece.

In view of the above-mentioned related art, when the milling machine needs to process a thin workpiece surface, the two ends of the workpiece need to be clamped between the first clamping block and the limiting plate, which is likely to cause deformation of the workpiece.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that when a thin workpiece is fixed, the workpiece is easy to deform, the application provides a fixing device for a numerical control milling machine.

The application provides a fixing device for numerically controlled fraise machine adopts following technical scheme:

a fixing device for a numerical control milling machine comprises a sucker body, wherein a fixing surface for fixing a workpiece is arranged on the sucker body, an air vent is formed in the fixing surface, an exhaust tube for connecting with an air extractor is communicated on the sucker body, a switch unit is arranged between the exhaust tube and the sucker body and comprises a connecting tube, one end of the connecting tube is connected with the sucker body, the other end of the connecting tube is connected with the exhaust tube, a first connecting ring is connected to the outer side of the connecting tube, one side of the first connecting ring, which is far away from the exhaust tube, is connected with a telescopic tube made of a corrugated tube, one end of the telescopic tube, which is far away from the first connecting ring, is connected with a connecting head, the connecting head is connected with the connecting tube in a sliding manner, a second connecting ring is connected to the outer side of the connecting tube, and one end, which faces the connecting head, of the second connecting ring is connected with a first magnet, one side of the connector, which deviates from the telescopic pipe, is connected with a second magnet which is attracted with the first magnet, a communication hole is formed in the connecting pipe, and the communication hole is located between the first connecting ring and the second connecting ring.

Through adopting above-mentioned technical scheme, the operator places the work piece on the stationary plane to cover the air vent, after the exhaust tube bleeds, this internal air of sucking disc is taken away, this internal atmospheric pressure of sucking disc is less than external atmospheric pressure, the atmospheric pressure that the work piece deviates from air vent one side is greater than the atmospheric pressure of work piece towards air vent one side, consequently, external atmospheric pressure fixes the work piece on compressing tightly the stationary plane, thereby with the work piece fixed, reduced the work piece and produced the possibility of warping, make things convenient for the milling machine to process the workpiece surface. When the workpiece needs to be released from fixation, an operator slides the connector until the first magnet is separated from the second magnet, air enters the connecting pipe from the communicating hole, the connecting pipe enters the sucker body, the air pressure in the sucker is increased, the air pressure difference between the two sides of the workpiece is reduced, and the operator can take the workpiece down from the sucker.

Optionally, the cover is equipped with spacing pipe on the connector, the inside wall of spacing pipe links to each other with the lateral wall of connector, be connected with the spacing ring on the connecting pipe, the spacing ring is connected with first sealing washer towards one side of spacing pipe, one side that spacing pipe deviates from the exhaust tube is connected with the second sealing washer, first sealing washer is inconsistent with the second sealing washer.

Through adopting above-mentioned technical scheme, when first magnet and second magnet actuation, first sealing washer is inconsistent with the second sealing washer, and reducible outside air gets into spacing intraductal possibility to reduce the possibility that outside air got into the connecting tube, strengthened switch unit's leakproofness.

Optionally, the outer side of the limiting pipe is connected with a fixed cylinder in a threaded manner, and the fixed cylinder is connected with the outer side of the limiting ring in a threaded manner.

Through adopting above-mentioned technical scheme, when first sealing washer contradicts with the second sealing washer, the rotatable solid fixed ring of operator, until solid fixed cylinder and spacing ring outside threaded connection, gu fixed cylinder is fixed spacing ring and spacing pipe, because of spacing ring and connecting pipe fixed connection, spacing pipe and connector fixed connection, consequently further fixed with connector and connecting pipe to it breaks away from even and leads to in the air admission connecting pipe to reduce connector and second go-between, the influence is to the adsorption effect of work piece.

Optionally, a sealing unit is arranged on the fixed surface, the sealing unit wraps a third sealing ring, the third sealing ring is abutted against the fixed surface, and the vent hole is located in the third sealing ring.

Through adopting above-mentioned technical scheme, place the work piece on the third sealing washer for the work piece contradicts with one side that the third sealing washer deviates from the stationary plane, and when the exhaust tube was bled, the reducible air of third sealing washer enters into this internal possibility of sucking disc from the gap between work piece and the stationary plane through the gas vent, thereby has reduced the possibility that influences the fixed effect of sucking disc to the work piece.

Optionally, a plurality of lugs are arranged on the fixing surface and are transversely and longitudinally and uniformly distributed, gaps are formed between the lugs transversely and longitudinally, the third sealing ring is clamped in the gaps, and the third sealing ring is higher than the lugs.

Through adopting above-mentioned technical scheme, when the work piece size changed, the operator can pull down the third sealing washer from the gap, changes the third sealing washer according to the size of work piece to be applicable to the work piece of equidimension not.

Optionally, a plurality of fixing grooves are formed in one side, away from the fixing surface, of each protruding block.

Through adopting above-mentioned technical scheme, during the fixed work piece, the gas in the fixed slot is taken away, and the atmospheric pressure of work piece towards one side of fixed slot is less than the atmospheric pressure of one side that the work piece deviates from the fixed slot, and atmospheric pressure compresses tightly the work piece in fixed slot department, increases the fixed point of work piece for it is more firm when the work piece is fixed.

Optionally, the sucking disc body is provided with the filter unit in venthole department, the filter unit includes the filtration ring, it links to each other with the venthole to filter the ring, it connects with the filter screen to filter the in-ring.

By adopting the technical scheme, when the exhaust tube exhausts air, the possibility that external impurities enter the sucker from the vent hole can be reduced by the filter screen.

Optionally, threaded connection has a sealed lid on the filtration ring, one side that sealed lid deviates from the filter screen is connected with twists the piece.

Through adopting above-mentioned technical scheme, when not using, can twist sealed lid on filtering the ring to seal the air vent, reduce the possibility that external debris fall onto on the filter screen or fall into this internal through the filter screen suction disc.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the sucking disc, when a thin workpiece is processed, the workpiece can be fixed on the sucking disc, so that the possibility of deformation of the workpiece is reduced;

2. through the arrangement of the sealing unit, the possibility that air enters the sucker body from a gap between the workpiece and the fixing surface through the air hole can be reduced, so that the possibility that the fixing effect of the sucker on the workpiece is influenced is reduced;

3. through the arrangement of the filtering unit, the possibility that external impurities enter the sucker from the vent hole can be reduced.

Drawings

FIG. 1 is a schematic overall structure diagram of a fixing device for a numerically controlled milling machine according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram for embodying a switch unit in an embodiment of the present application.

Fig. 3 is a schematic structural diagram for embodying a filtering unit according to an embodiment of the present application.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Description of reference numerals: 1. a suction cup body; 11. a fixed surface; 12. a vent hole; 13. an air exhaust pipe; 2. a switch unit; 21. a connecting pipe; 211. a communicating hole; 22. a first connecting ring; 23. a telescopic pipe; 24. a connector; 241. a second magnet; 25. a second connection ring; 251. a first magnet; 26. a limiting pipe; 261. a second seal ring; 27. a limiting ring; 271. a first seal ring; 28. a fixed cylinder; 3. a sealing unit; 31. a third seal ring; 32. a bump; 321. a gap; 322. fixing grooves; 4. a filtration unit; 41. a filter ring; 42. filtering with a screen; 43. a sealing cover; 44. twisting the block; 5. and a pressure gauge.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a fixing device for a numerical control milling machine.

Referring to fig. 1, the fixing device for the numerically controlled milling machine comprises a sucker body 1, wherein a fixing surface 11 is arranged on the sucker body 1, and the fixing surface 11 is used for fixing a workpiece. The suction cup body 1 is provided with a vent hole 12 on a fixing surface 11, and the vent hole 12 is used for adsorbing a workpiece. The sucking disc body 1 is communicated with an air exhaust pipe 13, and the air exhaust pipe 13 is used for being connected with an air extractor. A switch unit 2 is connected between the exhaust tube 13 and the sucker body 1, and the switch unit 2 is used for controlling the air pressure in the sucker body 1; the fixing surface 11 is provided with a sealing unit 3, and the sealing unit 3 is used for reducing the possibility of air leakage between the workpiece and the vent hole 12; the suction cup body 1 is provided with the filter unit 4 at the vent hole 12, and the filter unit 4 is used for reducing the possibility that external impurities enter the suction cup body 1 from the vent hole 12. Be provided with pressure gauge 5 on the sucking disc body 1, pressure gauge 5 is used for monitoring the atmospheric pressure size in the sucking disc body 1. When the air in the sucker body 1 is pumped away by the air pumping pipe 13, the atmospheric pressure of the workpiece at the vent hole 12 is small, the atmospheric pressure of the workpiece away from the vent hole 12 is large, and the workpiece is pressed on the fixing surface 11 by the external atmospheric pressure.

Referring to fig. 2, the switching unit 2 includes a connection pipe 21, and one end of the connection pipe 21 is communicated with the suction cup body 1 and the other end is communicated with the suction pipe 13. The outer periphery of the connecting pipe 21 is fixedly connected with a first connecting ring 22, one side of the first connecting ring 22 departing from the exhaust pipe 13 is fixedly connected with an expansion pipe 23, the expansion pipe 23 is made of a corrugated pipe, one side of the corrugated pipe away from the first connecting ring 22 is fixedly connected with a connector 24, the connector 24 is sleeved on the connecting pipe 21 and connected with the connecting pipe 21 in a sliding manner, and a gap for air to pass through is formed between the connector 24 and the connecting pipe 21. The outer periphery of the connecting tube 21 is further fixedly connected with a second connecting ring 25, the extension tube 23 is located between the first connecting ring 22 and the second connecting ring 25, a first magnet 251 is bonded to one side of the second connecting ring 25 facing the extension tube 23, a second magnet 241 is bonded to one side of the connecting head 24 facing away from the extension tube 23, and the first magnet 251 and the second magnet 241 are attracted. The connection tube 21 is provided with a plurality of communication holes 211, and the communication holes 211 are located between the first connection ring 22 and the second connection ring 25.

Referring to fig. 2, a limiting pipe 26 is sleeved on the connecting head 24, the inner side wall of the limiting pipe 26 is fixedly connected with the outer side wall of the connecting head 24, and a gap for air to pass through is formed between the limiting pipe 26 and the second connecting ring 25. The outer periphery of the connecting pipe 21 is fixedly connected with a limiting ring 27, the limiting ring 27 is located on one side of the second connecting ring 25 departing from the connecting head 24, a first sealing ring 271 is bonded on one side of the limiting ring 27 facing the second connecting ring 25, a second sealing ring 261 is bonded on one side of the limiting pipe 26 facing the limiting ring 27, and the first sealing ring 271 is abutted to the second sealing ring 261. The limiting tube 26 is sleeved with a fixed cylinder 28, the inner side wall of the fixed cylinder 28 is in threaded connection with the outer side wall of the limiting tube 26, and the fixed cylinder 28 is in threaded connection with the limiting ring 27.

Referring to fig. 2, when the workpiece is machined and needs to be released from the fixing position, the operator rotates the fixing cylinder 28 until the fixing cylinder 28 is separated from the limiting ring 27, and then moves the limiting tube 26 in a direction away from the limiting ring 27, the limiting tube 26 drives the connecting head 24 to slide along the connecting tube 21 until the first sealing ring 271 is separated from the second sealing ring 261 and the first magnet 251 is separated from the second magnet 241, at this time, the external gas can enter the connecting tube 21 and the suction cup body 1 through the communication hole 211, the workpiece is released from the fixing position, and the operator can take the workpiece off from the fixing surface 11. When the workpiece needs to be fixed, the operator moves the limiting tube 26 toward the limiting ring 27 until the first magnet 251 and the second magnet 241 are attracted, and the first sealing ring 271 abuts against the second sealing ring 261. The first and second sealing rings 271 and 261 reduce the possibility of the external air entering the limiting pipe 26, thereby reducing the possibility of the external air entering the connecting pipe 21 and improving the sealing performance of the switch unit 2. The first magnet 251 and the second magnet 241 are attracted to each other to fix the connecting head 24 primarily, thereby reducing the possibility of disconnecting the connecting head 24 from the second connecting ring 25. The operator then rotates the fixed cylinder 28 toward the retainer ring 27 until the fixed cylinder 28 is screwed with both the retainer ring 27 and the retainer tube 26, thereby fixing the retainer tube 26 by the fixed cylinder 28. Because the limiting tube 26 is fixedly connected with the connecting head 24, the fixing cylinder 28 further fixes the connecting head 24, and the possibility of disconnecting the connecting head 24 from the second connecting ring 25 is further reduced.

Referring to fig. 3 and 4, a plurality of bumps 32 are fixedly connected to the fixing surface 11, the bumps 32 are uniformly distributed along the transverse direction and the longitudinal direction, and a gap 321 is formed between every two adjacent rows and two adjacent columns of bumps 32. The fixing surface 11 is provided with a third sealing ring 31, the third sealing ring 31 is made of rubber, the third sealing ring 31 is clamped in the gap 321, the third sealing ring 31 is abutted against the fixing surface 11, and the third sealing ring 31 is higher than the projection 32. The side of the protrusion 32 away from the fixing surface 11 is provided with a fixing groove 322.

Referring to fig. 3 and 4, when fixing the workpiece, the operator places the workpiece on the third seal ring 31. When the air extracting pipe 13 extracts air, the workpiece is pressed on the third sealing ring 31 by the atmospheric pressure, so that the sealing performance between the workpiece and the fixing surface 11 can be enhanced, the possibility that air enters the sucker body 1 from the gap 321 between the workpiece and the fixing surface 11 is reduced, and the possibility that the workpiece is separated from the fixing surface 11 in the processing process is reduced. When the size of the workpiece is changed, the third seal ring 31 can be removed from the gap 321, and the third seal ring 31 can be replaced according to the size of the workpiece. When the air is pumped out, the air in the fixing groove 322 is pumped out, the atmospheric pressure of the workpiece facing one side of the fixing groove 322 is less than the atmospheric pressure of the workpiece facing the other side of the fixing groove 322, the workpiece is compressed at the fixing groove 322 by the external atmospheric pressure, the fixing point of the workpiece is increased, the possibility of separation of the workpiece from the fixing surface 11 in the processing process is further reduced, and the possibility of deformation of the workpiece due to local stress is reduced.

Referring to fig. 3 and 4, the filtering unit 4 includes a filtering ring 41 and a filter screen 42, the outer side wall of the filtering ring 41 is fixedly connected to the vent hole 12 on the suction cup body 1, the filtering ring 41 is fixedly connected to the filter screen 42 towards one end of the suction cup body 1, a sealing cover 43 is arranged on the filtering ring 41, the sealing cover 43 is in threaded connection with the inner side wall of the filtering ring 41, and a screwing block 44 is fixedly connected to one side of the sealing cover 43 departing from the filter screen 42. When the air is extracted by the air extracting pipe 13, the filter screen 42 can reduce the possibility that external impurities enter the sucker body 1. After the sucker body 1 is used, the operator can rotate the screwing block 44 to screw the sealing cover 43 on the filtering ring 41, so as to reduce the possibility that foreign matters enter the filtering net 42 and pass through the sucker body 1.

The fixing device for the numerical control milling machine comprises a sucker body 1 and is implemented according to the principle that: when the workpiece is fixed, the workpiece is placed on the third sealing ring 31, then the limiting pipe 26 is pulled until the first sealing ring 271 is abutted to the second sealing ring 261, then the fixing cylinder 28 is rotated until the fixing cylinder 28 is in threaded connection with the limiting ring 27, after the air exhaust pipe 13 starts to exhaust air, the workpiece is pressed on the fixing surface 11 by atmospheric pressure, and an operator can process the workpiece after fixing the suction cup body 1 on a milling machine.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a fixing device for numerically controlled fraise machine which characterized in that: the sucker comprises a sucker body (1), wherein a fixing surface (11) used for fixing a workpiece is arranged on the sucker body (1), an air vent (12) is formed in the fixing surface (11), an air exhaust pipe (13) used for being connected with an air extractor is communicated with the sucker body (1), a switch unit (2) is arranged between the air exhaust pipe (13) and the sucker body (1), the switch unit (2) comprises a connecting pipe (21), one end of the connecting pipe (21) is connected with the sucker body (1), the other end of the connecting pipe is connected with the air exhaust pipe (13), a first connecting ring (22) is connected to the outer side of the connecting pipe (21), a telescopic pipe (23) made of a corrugated pipe is connected to one side of the first connecting ring (22) deviating from the air exhaust pipe (13), and a connector (24) is connected to one end, far away from the first connecting ring (22), of the telescopic pipe (23), connector (24) and connecting pipe (21) slide and are connected, the connecting pipe (21) outside is connected with second go-between (25), second go-between (25) are connected with first magnet (251) towards the one end of connector (24), one side that connector (24) deviate from flexible pipe (23) is connected with second magnet (241) with first magnet (251) actuation, intercommunicating pore (211) have been seted up on connecting pipe (21), intercommunicating pore (211) are located between first go-between (22) and second go-between (25).

2. A fixture for a numerically controlled milling machine according to claim 1, wherein: the cover is equipped with spacing pipe (26) on connector (24), the inside wall of spacing pipe (26) links to each other with the lateral wall of connector (24), be connected with spacing ring (27) on connecting pipe (21), one side that spacing ring (27) are towards spacing pipe (26) is connected with first sealing washer (271), one side that spacing pipe (26) deviate from exhaust tube (13) is connected with second sealing washer (261), first sealing washer (271) are inconsistent with second sealing washer (261).

3. A fixing device for a numerically controlled milling machine according to claim 2, characterized in that: the outer side of the limiting pipe (26) is in threaded connection with a fixed cylinder (28), and the fixed cylinder (28) is in threaded connection with the outer side of the limiting ring (27).

4. A fixture for a numerically controlled milling machine according to claim 1, wherein: be provided with on stationary plane (11) sealing unit (3), sealing unit (3) package piece third sealing washer (31), third sealing washer (31) are contradicted with stationary plane (11), air vent (12) are located third sealing washer (31).

5. A fixture for a numerically controlled milling machine according to claim 4, wherein: be provided with a plurality of lugs (32) on stationary plane (11), it is a plurality of lug (32) are horizontal and vertical evenly distributed, be provided with clearance (321) between two adjacent lugs (32), third sealing washer (31) joint is in clearance (321), just third sealing washer (31) are higher than lug (32).

6. A fixture for a numerically controlled milling machine according to claim 5, wherein: and fixing grooves (322) are formed in one sides of the plurality of convex blocks (32) far away from the fixing surface (11).

7. A fixture for a numerically controlled milling machine according to claim 1, wherein: the sucking disc body (1) is provided with filter unit (4) in air vent (12) department, filter unit (4) are including filtering ring (41), it links to each other with air vent (12) to filter ring (41), it has filter screen (42) to filter ring (41) in-connection.

8. The fixing device for the numerically controlled milling machine according to claim 7, characterized in that: the filter ring (41) is connected with a sealing cover (43) in a threaded mode, and one side, away from the filter screen (42), of the sealing cover (43) is connected with a screwing block (44).

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